From March till June, it moves north of the Equator, reaching a latitude of Then it swings south, crossing the Equator in September, touching The point stays firmly within the belt between So noon is really that moment in the day when the Sun is at its highest in the sky.
When it is exactly halfway in its path across the sky between sunrise and sunset. For example, here in Mumbai it occurred at on the winter solstice a month ago, 21 December. Today, it comes at Actually a few minutes short of 24 hours, but never mind that. The thing to note is, the length of a solar day varies through the year. How so? First of all, think what defines a day on Earth: the rotation of the planet on its axis. Because of the rotation of the Earth, that point travels westward around the Earth.
Westward, because the Earth rotates west-to-east. But the Earth does orbit the Sun; so in those same 24 hours, it has also moved about a degree forward in its orbit. That orbital motion has an effect on the length of the solar day.
Imagine for a moment that the Earth only orbits the Sun and does not rotate on its axis. The Sun is directly overhead at "high-noon" on the equator twice per year, at the two equinoxes. Except at the equator, the equinoxes are the only dates with equal daylight and dark.
At the equator, all days of the year have the same number of hours of light and dark. Between the two tropics zones, which includes the equator, the Sun is directly overhead twice per year.
Outside the tropic zones, whether to the south or north, the Sun is never directly overhead. These circles are as far from the poles as the Tropic of Cancer and the Tropic of Capricorn are from the equator.
On that one day, the Sun traces a complete circle just above the horizon as the Earth rotates. Important Points. Start Learning English Hindi. The equator Answer Detailed Solution Below Option 2 : Get Started for Free Download App. Lunar Eclipse occurs only on. Which of the following is not a symptom for altitude sickness Acute mountain sickness? Olympus Mons, the biggest mountain in our solar system is located on. The moon orbits the earth every:. Titan is a natural satellite of which of the following planet?
If requested, today's positon will be shown in red, and will be between a solstice and an equinox. Point just inside the arctic circle. At the June Solstice, the sun never sets and complete a full degree transit.
The two equinoxes dark green have the same pattern, with the sun rising in the east and setting in the west true at any latitude , which happens everywhere on earth. The sun never rises for the December solstice. Annapolis at 39 degrees north.
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